Rollup merge of #101162 - rajputrajat:master, r=davidtwco

Migrate rustc_resolve to use SessionDiagnostic, part # 1

crate a somewhat on larger size, so plz allow some time to get it finished.

compiler/rustc_resolve/src/lib.rs

@@ -73,6 +73,7 @@ mod check_unused;
 mod def_collector;
 mod diagnostics;
 mod effective_visibilities;
+mod errors;
 mod ident;
 mod imports;
 mod late;